We are proud to announce the availability of the Android SIP SDK (AJVoIP) targeting developers who wish to build proprietary SIP client solutions or add VoIP capabilities into any existing android app.
AJVoIP is a compact, high performance and full featured SIP library for the Android platform with special care for minimal battery utilization.

The major new version of the Android SIP softphone is now available with a long list of new features and improvements.
This is the effort of a long year of continuous development efforts on the Android SIP stack to rise the solutions to the highest industry standards.
We invested a high amount of work to reduce battery usage to minimal and to fine-tune the software for maximum performance.
The new version takes full advantage of the latest Android capabilities (API level 27+) while also keeping maximum compatibility even with ancient devices (down to API level 9, compatible with all devices on the market).

The software were published to the google play with staged rollout thus you might not see the new version yet. Global availability will reach 100% until the weekend.

Today, we are very pleased to announce the release of our VoIP push notification solutions.
Never miss a call or message again.
Push notifications are now integrated into all our server side software, including the VoIP server, the WinPBX, the WebRTC gateway and on the client side including our webphone, the Android softphone and the iOS softphone.
Not only that we just added push notification support, but we also implemented a cross platform robust push module tightly integrated with VoIP, an efficient and well documented solution across all platforms.
From today we also provide push notification support for any third-party SIP server or SIP application. Have a look at our VoIP Push Notification Gateway if you are interested to add support into your existing VoIP network.

We are pleased to announce the availability of the new Windows SIP client.
This new version is the result of over 400 commits from the past 7 months with a long list of improvements and new features.
The most notable changes are the followings:
-new: first class OPUS codec support
-new: screen sharing / remote desktop
-new: support for WebRTC Video
-new: file transfer
-new: contact export/import and other integration capabilities
-improved: AEC and denoise
-improved: re-invite/hold/transfer/conference/multi-line support
-improved: SIP/media stack updated to latest version with over 300 improvements and bug fixes!

We are awaiting toward good days here at Mizutech.
After long weeks of background work, we are close to finalize a major new release for almost all our VoIP applications including the server side (softswitch, SBC, MRTC), the webphone and the softphones.
You can expect exciting new features and long list of improvements for almost all modules. A brand new software release is also on the table (surprise!).
Stay tuned and follow us on facebook for the release announcements.

Webphone v.2.4.1 - Friday, December 22, 2017

A new version (v.2.4.1) for the WebPhone have been released today.

This is a minor new version with a few bug fix and performance improvement over the previous big v.2.4 release.

I’m happy to let you all know that the new major version of our Java SIP library has just been released.
This new release is the result of our continuous development on the Java SIP and media stack, containing all the improvement and new functionalities introduced since June.

A new version for our Classic Windows Softphone have been released today.

The new version adds numerous buf fixes and improvements for our Classic softphone.
Please note that we don't plan to add new features for this softphone anymore as we are focusing on the Modern Windows Softphone since 2016. However we don't plan to deprecate this softphone in the near future and we are still actively maintain it's code base.

The Mizutech VoIP Server is an easy to use, robust all-in-one softswitch solution for VoIP service providers.

Now with new PBX features, conference rooms, enhanced WebRTC capabilites, text to speech, auto TLS, improved transcoding, improved configuration wizard and many more.
This is a major new version with more then 270 improvements and bug fixes. The most important changes are listed here.

JVoIP is a compact SIP client for the JVM which can be used as a SIP library to implement your dialer or add VoIP call capability to Java applications. Works with any SIP service, softswitch and IP-PBX such as Asterisk, FreePBX, FreeSWITCH or Cisco.

A single .jar of around 1 MB to be added to your project, containing everything you need for VoIP: G.729, Opus, DTMF, transfer, conference, chat, TLS/SRTP and many more.

JVoIP 6.4 contains a number of fixes and improvements, including audio/codec optimizations, rewritten presence, IM, call recording and HTTP API improvements (see the What's New section on it's homepage)

We are pleased to announce a new major release for our WebRTC-SIP gateway (MRTC).
This is an important milestone as it brings a new level of reliability for WebRTC conversion for any SIP server, softswitch or IP-PBX.

Fully automated configuration wizard helps you to setup your gateway with a few mouse clicks

The Mizu WebPhone is a multi-engine, multi-purpose universal SIP client for browsers compatible with all popular OS and browsers.
The WebPhone can be used as a turn-key highly customizable web softphone or as a JavaScript library to create any custom web VoIP solution.

Update [March 15, 2017]: an upgrade have been released (v.2.0.1) with further optimizations and some minor improvements/bug fixes

WebPhone v.1.9 - Saturday, December 24, 2016

We are pleased to announce the new webphone release v.1.9, just in time, before Christmas. We have been able to release this earlier then planned since we haven't run into any serious issue in the testing phrase.

As usually, this new version contains a lot of improvements, new features and bug fixes.
For the list of changes see the "Version History" chapter in the documentation.

Today we have released a SIP SDK for windows (MVoIPSDK) as part of our long term effort to provide a feature-rich VoIP solution for each platform.
The MVoIPSDK runs as a service on Windows desktops thus can be easily access from any framework/language (C++, .NET, C#, Delphi, VB, others) by commands sent via a local TCP connection.

WebPhone v.1.6 is available from today. This is a major new version with many improvements.

The webphone is a unique web SIP client solution with cross-platform capabilities and multiple built-in engines to take out the most from browser capabilities including native, webrtc, java and flash.
It can be used as a JavaScript library (for developers) or as a ready web softphone and click to call solution (included in the downloadable package).

After many months of background work, we have just released the new version of our Softswitch (v.8.0). With this new release we have achieved an important milestone opening new possibilities for our customers.

The Mizu Softswitch is a high performance general purpose VoIP server application suitable for call termination, wholesale, prepaid/postpaid retail customers, carrier SBC, proxy and other businesses or as a company PBX.

This is a major upgrade with many new features and improvements:
-SIP stack upgrade to v.4.2 with many encasements including better support for text messaging and SMS relay
-Full support for WebRTC including DTLS/SRTP RTP relay and built-in STUN and TURN servers
-New PBX features such as conference rooms and voicemail
-Click to call and call me features
-Better softphone integration including features like P2P, callback, sign-up, payments and many others
-Updated server configuration wizard with network/nat/localization auto-detection
-Intelligent RTP offloading capabilities (peer to peer media whenever possible)
-Auto codec transcoding when necessary
-Auto SSL certificate for HTTPS/WSS
-Improved built-in VoIP tunneling and encryption (optional module)
-Security enhancements
-Improved voip admin client
-More than 110 other improvements and bug fixes
-A new release for our customizable softphones
-Our VoIP server hosting service (SaaS ) was also refreshed with all the new features
-A special edition focusing on small business needs (company local PBX) is also available: https://www.mizu-voip.com/Software/WindowsPBX.aspx
-A robust SIP load balancer capable for millions of calls on a cheap hardware

Existing customers:
We are upgrading all servers during the next days. If you haven’t got the upgrade yet, please contact our support.

We are pleased to announce our compact PBX, a softswitch for windows focusing on company communication needs.
The Mizu PBX for windows is an easy to install and easy to use full featured VoIP communication server for your company office.

A new version of our iOS softphone is available with improved 64bit support, optimized audio processing, accepting calls while on sleep/not running (in customized versions), enchanted auto-provisioning, numerous bug fixes and improvements. Branded builds are available on request.

We have refreshed our MizuCall VoIP SIP services.
The service was upgraded to latest mizu server with improved NAT handling and account management.
All the softphones were upgraded to latest stable version.
Unlimited free sip accounts, registrations, calls and messaging.

We have released a new version for our softswitch today with many improvements and also bug fixes together with a new version of our VoIP management admin client.
A general security review have been performed in our server and client applications. During the process we made numerous improvements and fixed all the known security related bugs. Sensitive data is now encrypted everywhere, sql injection and xsl attack surfaces were hardened and our TLS process got a new upgrade to conform with latest standards.
Server-side security related documentation can be found here: VoIP server security

New windows softphone - Saturday, December 5, 2015

We are pleased to announce our new Windows Softphone release.
From today we are going to offer two windows softphone line: classic and modern.
The modern softphone is a new product focusing on flexibility and easy customization.
The classic edition is our old good native softphone which is updated now to v.3.2.4.

The softphone is free for non-commercial usage. Download free classic from here and modern from here.
We offer customized builds for VoIP service providers and also individual commercial license for $49. Buy from here. Once purchased, you can use the same license key with all our softphones including both the classic and modern windows softphone but also with our mobile softphones.

We have refreshed our SaaS VoIP Hosting platform. Now with lower costs and more features.

MVoIP server v.7.4.2 - Thursday, September 24, 2015

We are pleased to announce a new major release for our VoIP server with the following changes:

all cumulative updates since 2015 January

new MizuManage

WebRTC support

API over websocket and json

fast route path

kernel mode RTP routing

a new mailer client

smart blacklist

MNP improvements

new tunneling module

built-in webserver

RTMP/Flash support

DetailsDownload
We already refreshed the service for all existing customers within the support period.

New universal webphone release - Sunday, September 13, 2015

I am glad to announce the new version of our webphone v.0.9.

With this release we have accomplished another milestone and we are going to slowly begin also the support for this software. We will continue now with more tests, some refactoring and will add the flash and app engines for v.1.0 which will be here very soon. The webphone is fully usable also without these engines, but we feel that it will be complete only once we achieve all our goals, supporting all the announced engines.

After the summer holidays and some background works, we are back with full force and with many new enhancement for our VoIP stack. Stay tuned as we are going to release some interesting modules and new software versions in the following weeks.

Universal Webphone Beta - Monday, June 22, 2015

We are glad to announce our new Universal Webphone.
"Universal" because uses multiple engines to cover all the possible platforms with VoIP capabilities.

Our VoIP softswitch just got a performance boost.
The most important change is the introduction of kernel space RTP routing. Since 80% of the CPU on a VoIP server is wasted to relay the media packets, optimizations in this module has the bigger impact for the overall performance. By performing the RTP routing in the kernel space we achieved 2X speedup.
Other improvements include fast registrar optimizations, auto-tuning depending on server load and various micro optimizations.
Current customers will receive this upgrade automatically. A new standalone server release will be published soon with all these changes.VoIP server download

MizuDroid 2.0 in the Google Play - Thursday, April 23, 2015

MizuDroid is available in the Android store.
Free, professional SIP softphone. No advertisements.

The new "universal" API for the Mizutech VoIP server is available now to help you with any VoIP integration tasks.
Works over UDP, TCP, HTTP, SIP and SMS
Supported data formats includes plain text, JSON, XML and others.
A single place for all services, including user registration, rating and credit requests, SMS, P2P, callback and many others with the possibility to easily add new custom functions.

This post is designed to provide clarity on the future of our VoIP development efforts.

You might observed that in the last months there was less visible activity from our side. Our team was focusing on not so visible but very important background works and we managed to build a new platform which will be the baseline for our new VoIP solutions. The key goals was to create a fast, stable and flexible platform but we also innovated in areas where we saw major gaps such as VoIP tunneling, scalability, cross-platform, service monitoring and more flexible customizations.

We spent the vast majority of 2014 working hard to develop these modules and features and we are happy to announce that they will be going live step by step during the next two months:

*Client side:
-A new cross-platform webphone with webrtc/java/native/flash sip/media engine with a flexible new API.
-A new softphone line for Windows, Android, iOS and others, using our latest SIP stack with easy customization in mind
-An automated build process, so our customers will have to wait less for their builds and updates (actually we will be able to build fully customized softphones for all platforms in around 20 minutes)
*VoIP server:
-Kernel space RTP routing for the maximum performance
-A lightning fast user to user signaling
-Scalability and load balancing
-A new flexible API
-Many improvements and new features
-Standalone install package
*VoIP tunneling:
-I think that we have built the most sophisticated VoIP tunnel solution currently available on the market
-Multiple transport layer (UDP/TCP/HTTP/Websocket/WebRTC)
-Multiple layered encryption methods (TLS/SRTP/ and a fast RSA based encryption)
-Sophisticated obfuscation to bypass all VoIP blockage or service degradation attempt
-Implementations for all major platforms (web/win/android/iOS and more to come)
*VoIP Cloud:
-Our VoIP SaaS platform will receive a major upgrade, offering a complete solution for companies and VoIP businesses with easy management and maximum flexibility

We are very excited about the changes to come, and hope you are as well!

Our web/email servers are under maintenance and will be back soon.VoIP servers are not affected.

VoIP tunneling and encryption -new solutions is available - Friday, December 5, 2014

We are pleased to announce the new version of our VoIP tunneling solution.
The new software suite is the result of one year development effort with the purpose to completely solve all VoIP blockage related issues all over the world.

WebSIPphone certificate upgrade - Wednesday, April 23, 2014

The new "white-label" certificate for our webphone is available fromtoday.

Due to the high demand for a "white-label" certificate we are changing the old certificate issued to "MizuTech" to a new one issued to "WebVoIPPhone".

For this reason we have created a new company with the same name. The new company is not associated with us and we also bought the domain with the same name (http://www.webvoipphone.com) to assure that this name will not be linked with any other company in the future, keeping your webphone truly white label.

In the following days we are going to send the new version for all our customers within the support period. For customers with expired support we can offer a support package for $600 which will extend the support period with 2 years.

Please note that this new certificate is bought for 3 years and we plan to renew before to expire.

MizuDroid have got a bug fix release today.
The previous version was a big rewrite and as usually bugs are happening with big changes.
This new version is a bug fix release with the following changes:
-fix cpu overutilization issue on low-end devices
-fix tunneling and encryption
-fix some STUN and ringback issues
-22 other smaller bug fix and improvement

It has been a long time since we released the last upgrade for our Android softphone. However, in the meantime we have continued its development, we have rewritten and refreshed most modules and today we are pleased the release of the new major version with a lot of improvements.

In the last year we have received many request for a Mizu softphone for the iPhone iOS platform.
Based on these request we have started to work on a customizable softphone and recently published on the Android App Store.

We are glad to announce our new Android softphone called MizuDroid. The softphone is available from the Android market for free. We offer customized builds for VoIP service providers.

Mizu Softswitch upgrade - Wednesday, June 1, 2011

No new modules or big changes in this upgrade. Just a lot of small improvements and minor bug fixes.
The patch can be downloaded from here: softswitch upgrade
This will upgrade the version number to 4.2.6.

Includes many small improvements, conferencing, voice recording and improved encryption/tunneling. For more details please check the version history in the webphone documentation.

VoIP tunnel 4.2.6 is available - Monday, February 7, 2011

The new version comes with a new random port selection algorithm, client driven upper server selection and more control about the ports used (signaling + media in a single stream vs random ports for uploads and downloads). TCP and proxy tunneling upgraded with a new transport stack.

Mizutech VoIP tunneling solutions allows VoIP encryption and to offer VoIP services in countries where VoIP is blocked or from behind corporate firewalls. The new version comes with performance optimisations.

Mizutech Office in Romania - Sunday, June 27, 2010

Since most of our the team members are living in Romania, we have moved our office from Hungary, Budapest to Romania, Brasov. The new contact details can be found here.

In the same time we have migrated most of our server to UK collocation centers to improve the access times and the load balancing.

VoIP DoS attack test - Saturday, June 19, 2010

Our VoIP Tester application was updated with a DoS - DDoS test module. Stresstest your VoIP infrastructure by just launching the application and click on the DoS "Start" button.

Today we have started our free VoIP service, an internet phone which you can use to make true VoIP calls trough any VoIP service provider. The service is based on our webphone technology and it is free. You don't need any equipment or software download to use it.Public Internet Phone

VoIP Server download and fast deployment - Monday, March 2, 2009

Our carrier grade class5 softswitch has been available for enterprises until now, but today we have opened it for the public. The VoIP servers are based on Windows/MSSQL platform and its easy deployment can be a big help for small businesses who have stayed avay from VOIP until now. We have even created a free version which can be a suitable solution for small companies or home users.

Webphone - Thursday, February 5, 2009

Lots of peope have asked us if we have a softphone solution that can be used directly from web browsers without installing anything. The solution is here: webphone

New release - Monday, October 27, 2008

We are happy to announce the new MizuPhone release, version 1.2.4.
This is a major release with new modules and lots of improvements.
Compatibility with many sip devices and service providers have been fixed.
This line of VoIP softwares focuses on enterprise deployement.

Domain name changed - Wednesday, October 1, 2008

We have changed our domain from www.mizutech.hu to www.mizu-voip.com. Meantime we are working hard on the next softphone release with new interesting features and improvements.

Softphone Version 1.0.2d - Thursday, August 21, 2008

In this minor upgrade of the softphone the wideband speex codec's (default for mizuphone-mizuphone calls) are working again even if the silence detection is enabled. Fixed compatibilty problems with cisco and other devices, fixed the call hangup after 60 sec and some other minor issues.

MizuPhone -bugfix release - Monday, August 11, 2008

MizuPhone 1.0.2 released.
In the last month we have received lots of feedback regarding mizuphone bugs and compatibility problems. We have successfully corrected all the reported issues and added numerous small additions and full integration with trixbox/Asterisk. You can find the changelog list on the forum

MizuPhone -stable version - Thursday, July 17, 2008

We are glad to announce, that after 2 months beta testing, the first stable version of our sip softphone is ready to downloadwith many bugfixes and improvements. More details about the changes on the forum.

MizuPhone initial release - Thursday, May 22, 2008

MizuPhone 0.8.2 has been released today to conquer the VoIP softphone market. You are welcome to download and use it! Any feedback will be appreciated.

Mizu PBX v2.0 is available - Wednesday, September 19, 2007

Mizu PBX v2.0 is released! This major update adds significant new features: prepaid billing, invoices, pincodes, NAT support improvements and many others.